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OpenAI Text-to-Speech vs. Microsoft Azure AI Speech

The best way to compare OpenAI Text-to-Speech vs. Microsoft Azure AI Speech: audio samples, features, plans, pricing, and more.

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Live Demo

Try our text-to-speech API. Click a button to generate random text:

Non-Fiction
Fiction
News
Blog
Conversation
0/250
Voice
Format
Normal
Speed
Filesize
0 kb
Text to speech API - OpenAI Text-to-Speech

OpenAI Text-to-Speech

Convert text into lifelike spoken audio using one of the six built-in voices.
Text to speech API - Microsoft Azure AI Speech

Microsoft Azure AI Speech

Enables your applications, tools, or devices to convert text into human-like synthesized speech.

Voice Quality

OpenAI Text-to-Speech Samples

Mean Opinion Score
Fiction
N/A
Non-Fiction
N/A
Conversation
N/A

Microsoft Azure AI Speech Samples

Mean Opinion Score
Fiction
3.69
Non-Fiction
3.13
Conversation
3.18
Mean Opinion Score (MOS) is a numerical measure that represents the perceived quality of audio samples, commonly used in evaluating text-to-speech systems. The score ranges from 1 to 5, with 1 indicating poor quality and 5 signifying excellent quality. These scores are derived from comprehensive, professionally-conducted evaluations, and are anonymized to ensure unbiased results.

Features

OpenAI Text-to-Speech Features

Voice Cloning
Multi-lingual
Per-word Timestamps
Pitch Control
Speed Control
Phone Formats (e.g. pcm_mulaw)

Microsoft Azure AI Speech Features

Voice Cloning
Multi-lingual
Per-word Timestamps
Pitch Control
Speed Control
Phone Formats (e.g. pcm_mulaw)

Features - Conclusion

  • Microsoft Azure AI Speech offers a more comprehensive set of features compared to OpenAI Text-to-Speech, including voice cloning, per-word timestamps, pitch and speed control, and support for phone formats.
  • This makes Azure AI Speech a more versatile and customizable option for users needing advanced text-to-speech capabilities.
  • OpenAI Text-to-Speech, while supporting multiple languages, lacks these advanced features, positioning it as a more basic option for users with simpler needs.

Pricing & Plans

OpenAI Text-to-Speech Pricing

Pay As You Go
$15per
1M characters
Optimized for speed
Pay As You Go (TTS HD)
$30per
1M characters
Optimized for quality

Microsoft Azure AI Speech Pricing

Free
$0/mo
5 hours of audio (~225K chars)
Pay As You Go
$15per
1M characters

Pricing & Plans - Conclusion

  • For users with lower audio generation needs, Microsoft Azure AI Speech stands out as the more cost-effective option due to its generous free tier, which offers a significant amount of characters at no cost each month.
  • However, for those requiring extensive text-to-speech services, both OpenAI Text-to-Speech and Microsoft Azure AI Speech level the playing field with identical pricing structures for high-volume usage.
  • This makes both services equally viable for users with substantial text-to-speech conversion needs, allowing the choice to be based on other factors such as features or personal preference.

Compare Alternatives

OpenAI Text-to-Speech Alternatives

OpenAI Text-to-Speech vs. Unreal Speech
OpenAI Text-to-Speech vs. Amazon Polly
OpenAI Text-to-Speech vs. ElevenLabs
OpenAI Text-to-Speech vs. Play.ht
OpenAI Text-to-Speech vs. Google Cloud Text-to-Speech
OpenAI Text-to-Speech vs. Murf API
OpenAI Text-to-Speech vs. Neets.ai
OpenAI Text-to-Speech vs. IBM Watson
OpenAI Text-to-Speech vs. Resemble.AI
OpenAI Text-to-Speech vs. LOVO AI
OpenAI Text-to-Speech vs. Deepgram Aura

Microsoft Azure AI Speech Alternatives

Microsoft Azure AI Speech vs. Unreal Speech
Microsoft Azure AI Speech vs. Amazon Polly
Microsoft Azure AI Speech vs. ElevenLabs
Microsoft Azure AI Speech vs. Play.ht
Microsoft Azure AI Speech vs. Google Cloud Text-to-Speech
Microsoft Azure AI Speech vs. Murf API
Microsoft Azure AI Speech vs. Neets.ai
Microsoft Azure AI Speech vs. IBM Watson
Microsoft Azure AI Speech vs. Resemble.AI
Microsoft Azure AI Speech vs. LOVO AI
Microsoft Azure AI Speech vs. Deepgram Aura

Summary

  • When comparing OpenAI Text-to-Speech and Microsoft Azure AI Speech, it's evident that Azure offers a more feature-rich and versatile service, with advanced capabilities like voice cloning and pitch control, making it suitable for a wide range of applications.
  • Although both services offer competitive pricing for high-volume users, Azure stands out with its generous free tier for those with lower usage needs.
  • Overall, Microsoft Azure AI Speech presents a more comprehensive solution for text-to-speech needs, balancing superior features with cost-effectiveness.

Looking for a better alternative to OpenAI Text-to-Speech & Microsoft Azure AI Speech?

Try Unreal Speech! You get 250,000 free characters every month.

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